Vehicle Bandwidth Allocation to Prevent Wireless Congestion

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Solution Overview

Problem

The increasing amount of data transmitted and received by vehicles leads to potential communication congestion when many vehicles perform wireless communication in specific areas, especially those with high traffic accident rates, limiting the effectiveness of safe driving support services.

Innovation Solution

A communication management system that identifies and allocates frequency bands based on the communication capacity of individual vehicles, distinguishing between desired and required bandwidths to manage communication effectively and prevent congestion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If communication area is limited to specific areas with high traffic accident rates, then the number of vehicles using communication bandwidth is reduced, but communication congestion occurs when many vehicles perform wireless communication in the limited area or when the amount of data to be transmitted and received is large

Engineering Contradiction:

Improvenumber of vehicles using communication bandwidthVSAvoidcommunication congestion

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent implements dynamic frequency band allocation where the communication management device continuously monitors communication status and adjusts frequency band assignments in real-time based on current traffic conditions and data transmission requirements, allowing the system to adapt to changing communication demands and prevent congestion

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes communication parameters by allocating different frequency bands to different vehicles based on their communication capacity and requirements. The communication management device identifies appropriate frequency bands for each vehicle and transmits allocation results, effectively managing bandwidth utilization through parameter optimization

Inventive Principle:

Principle #35Parameter changes

2Productivity

If frequency bands are allocated based on communication capacity of individual vehicles, then communication resources are efficiently allocated, but system complexity increases due to the need to identify and manage multiple frequency bands

Engineering Contradiction:

Improvecommunication resource allocation efficiencyVSAvoidfrequency band management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent introduces a communication management device as an intermediary between vehicles and the communication infrastructure. This central mediator handles all frequency band allocation decisions, simplifying the system architecture by consolidating management functions in a single entity rather than distributing complexity across multiple vehicles or infrastructure components

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12588013B2Communication management device, communication management method, and storage medium for communication management

Publication Date: 2026.03.24 DENSO CORP

AI summary

A center server corresponding to a communication management device manages communication between a vehicle and an outside thereof. The center server includes: a request acquisition unit corresponding to an acquisition unit that acquires a requested bandwidth, which is a communication bandwidth requested for execution of a specific process in the vehicle, a radio resource arbitration unit corresponding to an identification unit that identifies a frequency band to which the requested bandwidth is allocated, according to a communication capacity of the vehicle, and a request response unit corresponding to a transmission unit that transmits, to the vehicle, an allocation result of allocating the requested bandwidth to the identified frequency band.